However, due to Sand Crabs being very crowded, some players choose to train on Waterbirth Island, as it has multiple convenient spawn locations where a player can stand still and always have 3-4 Rock Crabs attacking them at any moment, making it comparable to the experience rates of Sand Crabs. King Sand Crabs are aggressive monsters that look like sandy boulders while disguised, but attack when walked by. Drops 100%. King Sand Crab . Sand Crabs are aggressive monsters that look like harmless sandy rocks while disguised, but attack when walked by in an identical fashion to the older Rock Crabs.They are found along the southern coast in Great Kourend's Hosidius House.No favour is required to access or kill them, they are available to all players who are willing to traverse the distance to get to them. Item Quantity Rarity GE market price Bones: 1 Always 89 Runes/Talismans. Contents . King Sand Crabs are aggressive monsters that look like sandy boulders while disguised, but attack when walked by. They are found inside the Catacombs of Kourend in the southeast section of the dungeon, as well as the Crabclaw Caves found south of the Woodcutting Guild. They are found inside the Catacombs of Kourend in the southeast section of the dungeon, as well as the Crabclaw Caves found south of the Woodcutting Guild. From Old School RuneScape Wiki (Redirected from King sand crab) Jump to: navigation, search.